This article discusses the concept of work engagement and summarizes research on its most important antecedents. The authors formulate 10 key questions and shape a research agenda for engagement. In addition to the conceptual development and measurement of enduring work engagement, the authors discuss the importance of state work engagement. Further, they argue that the social context is crucial and may set the stage for a climate for engagement with an important role for management. Engaged employees conserve their own engagement through a process of job crafting. After discussing possible dark sides of engagement and the relationship between engagement and health, the article closes with a discussion of organizational interventions to inc...